Scott Lamb 91ef07b9a7 bump required rust to 1.27
1.26 doesn't work with the updated rusqlite:

error[E0658]: use of unstable library feature 'duration_extras' (see issue #46507)
  --> /home/travis/.cargo/registry/src/github.com-1ecc6299db9ec823/rusqlite-0.14.0/src/busy.rs:26:49
   |
26 |             .and_then(|t| t.checked_add(timeout.subsec_millis().into()))
   |                                                 ^^^^^^^^^^^^^
2018-08-28 21:47:02 -07:00
..
2018-08-28 21:47:02 -07:00
2018-08-24 21:04:13 -07:00